A jack having a detachable rear-end handle comprises a wheeled jack and a hand-held ring. Two sidewalls of the jack are each provided with a pair of blocking pieces respectively mounted on an upper location and a lower location about a screw nut of a rear shaft. The hand-held ring can be coupled to screw nuts of a rear shaft. The blocking pieces further restrict the rotation of the hand-held ring. The connection of the hand-held ring at the rear end of the jack not only facilitates carrying the jack but also controlling the movements of the jack to a proper lift point.
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1. A jack having a detachable rear-end handle comprising
a jack being a wheeled jack having two sidewalls each provided with a pair of blocking pieces respectively mounted on an upper location and a lower location about a screw nut of a rear shaft of said jack; and
a hand-held ring being a handle bar integrally connected with two side arms respectively at two ends thereof, a free end of each side arm being provided with an encircling hole for being coupled with a corresponding screw nut of a rear shaft of said jack, said hand-held ring, thereby coupled with said screw nuts of a rear shaft, forming a rear-end handle for said jack.
2. The jack having a detachable rear-end handle of
3. The jack having a detachable rear-end handle of
4. The jack having a detachable rear-end handle of
5. The jack having a detachable rear-end handle of
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(a) Field of the Invention
The present invention relates to jacks having a detachable rear-end handle, more particularly to a wheeled jack having a hand-held ring connected to the screw nuts of the rear shaft for facilitating transporting the jack and adjusting the supporting plate thereof to a proper lift point.
(b) Description of the Prior Art
The wheeled jacks of the prior art do not have a handle or a hand-held ring for a portable transportation. To carry a wheeled jack, it is therefore necessary to put the jack in a hand-held bag or a box. It is an alternative that some wheeled jacks are provided with a hand-held ring connected to the outer walls of the sidewalls at a middle shaft. Since the jack extends horizontally when being lifted, it tends to waver about a horizontal plane, which leads to unexpectedly collisions with surrounding objects. It is a further disadvantage that a hand-held ring on the middle section of the sidewalls cannot assist pushing the jack toward a selected lift point under a huge object such as a vehicle.
Accordingly, the primary objective of the present invention is to provide a jack having a detachable rear-end handle, wherein, on each side of the rear portion of the sidewalls, two blocking pieces are each mounted on an upper location and a lower location close to the screw nut of a rear shaft. Those blocking pieces are for restricting the rotation of a hand-held ring. Since the hand-held ring is connected to the rear end of the jack, the jack is in a vertical configuration when being lifted, so as to avoid collisions between the jack and surrounding objects. When lying on the ground, the rear-end handle can be used to control the horizontal movement of the jack so as to aim the supporting plate of the jack at a selected lift point on the bottom of a vehicle.
The secondary objective of the present invention is to provide a jack having a detachable rear-end handle, wherein the blocking pieces about the screw nuts of the rear shaft of the sidewalls can be a pair of pins, a pair of bulged objects, an integrally punch-formed plate or any other configurations capable of restricting the rotation of the hand-held ring.
The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawings.
Referring to FIG. 1 and
The hand-held ring 2 is a handle bar with two perpendicularly extended arms respectively at two ends thereof. Each arm has an encircling hole 21 at the free end thereof. The encircling holes 21 are respectively engaged with corresponding screw nuts of a rear shaft 12, as shown in
Referring to
The above-mentioned hand-held ring 2 is preferably made of flexible materials such as plastics, for that two lateral arms of the hand-held ring 2 can be properly extended outwardly to put the encircling holes 21 around the screw nuts of a rear shaft 12. To take the hand-held ring 2 off the jack 1, the lateral arms of the hand-held ring 2 are again extended so that the encircling holes 21 are decoupled from the screw nuts of a rear shaft 12.
According to the present invention, besides a pair of pins and a pair of bulged objects, the upper and lower blocking pieces 13 may also be embodied in a single plate punch-formed on each of the sidewalls 11 of the jack 1, as shown in FIG. 6. The plate replaces the upper and lower blocking pieces 13 to restrict the rotation of the hand-held ring 2. The present invention is thus described, and it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the present invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.
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Jul 28 2003 | HUNG, VICTOR | MVP H K INDUSTRIES LIMITED | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 014410 | /0194 | |
Aug 19 2003 | MVP (H.K.) Industries Limited | (assignment on the face of the patent) | / |
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